func getVaList(_:)(_ args: [CVarArg]) -> CVaListPointer Returns a `CVaListPointer` that is backed by autoreleased storage, built from the given array of arguments. You should prefer withVaList(_:_:) instead of this function. In some uses, such as in a class initializer, you may find that the language rules do not allow you to use withVaList(_:_:) as intended. If you need to pass an optional pointer as a CVarArg argument, use the Int(bitPattern:) initializer to interpret the optional pointer as an Int value, which has the same C variadic calling conventions as a pointer on all supported platforms. Parameter args: An array of arguments to convert to a C va_list pointer.